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Fine-grained visual categorization (FGVC), which aims at classifying objects with small inter-class variances, has been significantly advanced in recent years. However, ultra-fine-grained visual categorization (ultra-FGVC), which targets at…

Computer Vision and Pattern Recognition · Computer Science 2021-10-28 Yajie Sun , Miaohua Zhang , Xiaohan Yu , Yi Liao , Yongsheng Gao

Direct RAW-based object detection offers great promise by utilizing RAW data (unprocessed sensor data), but faces inherent challenges due to its wide dynamic range and linear response, which tends to suppress crucial object details. In…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Zhuohua Ye , Liming Zhang , Hongru Han

Fine-grained visual categorization (FGVC) aims to discriminate similar subcategories, whose main challenge is the large intraclass diversities and subtle inter-class differences. Existing FGVC methods usually select discriminant regions…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Yu Wang , Shuo Ye , Shujian Yu , Xinge You

Self-supervised monocular depth estimation has been widely studied, owing to its practical importance and recent promising improvements. However, most works suffer from limited supervision of photometric consistency, especially in weak…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Hyunyoung Jung , Eunhyeok Park , Sungjoo Yoo

Fine-grained image recognition is a longstanding computer vision challenge that focuses on differentiating objects belonging to multiple subordinate categories within the same meta-category. Since images belonging to the same meta-category…

Computer Vision and Pattern Recognition · Computer Science 2023-09-04 Yifan Pu , Yizeng Han , Yulin Wang , Junlan Feng , Chao Deng , Gao Huang

We aim to provide a computationally cheap yet effective approach for fine-grained image classification (FGIC) in this letter. Unlike previous methods that rely on complex part localization modules, our approach learns fine-grained features…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Wei Luo , Hengmin Zhang , Jun Li , Xiu-Shen Wei

Fine-grained visual classification (FGVC) requires distinguishing between visually similar categories through subtle, localized features - a task that remains challenging due to high intra-class variability and limited inter-class…

Computer Vision and Pattern Recognition · Computer Science 2025-09-22 Johann Schmidt , Sebastian Stober , Joachim Denzler , Paul Bodesheim

Fine-grained categories are more difficulty distinguished than generic categories due to the similarity of inter-class and the diversity of intra-class. Therefore, the fine-grained visual categorization (FGVC) is considered as one of…

Computer Vision and Pattern Recognition · Computer Science 2015-05-12 Guo Lihua , Guo Chenggan

Fine-grained visual classification (FGVC) aims to classify sub-classes of objects in the same super-class (e.g., species of birds, models of cars). For the FGVC tasks, the essential solution is to find discriminative subtle information of…

Computer Vision and Pattern Recognition · Computer Science 2021-06-22 Chenyu Guo , Jiyang Xie , Kongming Liang , Xian Sun , Zhanyu Ma

Incremental Few-Shot (IFS) segmentation aims to learn new categories over time from only a few annotations. Although widely studied in 2D, it remains underexplored for 3D point clouds. Existing methods suffer from catastrophic forgetting or…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Vishal Thengane , Zhaochong An , Tianjin Huang , Son Lam Phung , Abdesselam Bouzerdoum , Lu Yin , Na Zhao , Xiatian Zhu

Unsupervised semantic segmentation aims to obtain high-level semantic representation on low-level visual features without manual annotations. Most existing methods are bottom-up approaches that try to group pixels into regions based on…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Zhaoyuan Yin , Pichao Wang , Fan Wang , Xianzhe Xu , Hanling Zhang , Hao Li , Rong Jin

The term fine-grained visual classification (FGVC) refers to classification tasks where the classes are very similar and the classification model needs to be able to find subtle differences to make the correct prediction. State-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Harald Hanselmann , Hermann Ney

Fine-grained visual classification (FGVC) aims to distinguish the sub-classes of the same category and its essential solution is to mine the subtle and discriminative regions. Convolution neural networks (CNNs), which employ the cross…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Siqing Zhang , Ruoyi Du , Dongliang Chang , Zhanyu Ma , Jun Guo

Fine-grained image recognition is very challenging due to the difficulty of capturing both semantic global features and discriminative local features. Meanwhile, these two features are not easy to be integrated, which are even conflicting…

Computer Vision and Pattern Recognition · Computer Science 2021-02-22 Shaokang Yang , Shuai Liu , Cheng Yang , Changhu Wang

Successful fine-grained image classification methods learn subtle details between visually similar (sub-)classes, but the problem becomes significantly more challenging if the details are missing due to low resolution. Encouraged by the…

Computer Vision and Pattern Recognition · Computer Science 2017-10-17 Dingding Cai , Ke Chen , Yanlin Qian , Joni-Kristian Kämäräinen

Fine-Grained Visual Classification (FGVC) aims to categorize closely related subclasses, a task complicated by minimal inter-class differences and significant intra-class variance. Existing methods often rely on additional annotations for…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Pengxiang Gao , Yihao Liang , Yanzhi Song , Zhouwang Yang

Delineating anatomical regions is a key task in medical image analysis. Manual segmentation achieves high accuracy but is labor-intensive and prone to variability, thus prompting the development of automated approaches. Recently, a breadth…

Image and Video Processing · Electrical Eng. & Systems 2025-11-05 Alix de Langlais , Benjamin Billot , Théo Aguilar Vidal , Marc-Olivier Gauci , Hervé Delingette

The core for tackling the fine-grained visual categorization (FGVC) is to learn subtle yet discriminative features. Most previous works achieve this by explicitly selecting the discriminative parts or integrating the attention mechanism via…

Computer Vision and Pattern Recognition · Computer Science 2022-03-02 Jun Wang , Xiaohan Yu , Yongsheng Gao

Over the past few years, a significant progress has been made in deep convolutional neural networks (CNNs)-based image recognition. This is mainly due to the strong ability of such networks in mining discriminative object pose and parts…

Computer Vision and Pattern Recognition · Computer Science 2022-10-05 Asish Bera , Zachary Wharton , Yonghuai Liu , Nik Bessis , Ardhendu Behera

Fine-grained visual classification (FGVC) involves classifying closely related sub-classes. This task is difficult due to the subtle differences between classes and the high intra-class variance. Moreover, FGVC datasets are typically small…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Eyal Michaeli , Ohad Fried
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